Non-Markovian dynamics of a single-mode cavity strongly coupled to an inhomogeneously broadened spin ensemble

Dmitry O. Krimer, Stefan Putz, Johannes Majer, and Stefan Rotter
Phys. Rev. A 90, 043852 – Published 24 October 2014

Abstract

We study the dynamics of a spin ensemble strongly coupled to a single-mode resonator driven by external pulses. When the mean frequency of the spin ensemble is in resonance with the cavity mode, damped Rabi oscillations are found between the spin ensemble and the cavity mode which we describe very accurately, including the dephasing effect of the inhomogeneous spin broadening. We demonstrate that a precise knowledge of this broadening is crucial both for a qualitative and a quantitative understanding of the temporal spin-cavity dynamics. On this basis we show that coherent oscillations between the spin ensemble and the cavity can be enhanced by a few orders of magnitude, when driving the system with pulses that match special resonance conditions. Our theoretical approach is tested successfully with an experiment based on an ensemble of negatively charged nitrogen-vacancy centers in diamond strongly coupled to a superconducting coplanar single-mode waveguide resonator.

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  • Received 25 July 2014

DOI:https://doi.org/10.1103/PhysRevA.90.043852

©2014 American Physical Society

Authors & Affiliations

Dmitry O. Krimer1,*, Stefan Putz2, Johannes Majer2, and Stefan Rotter1

  • 1Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10/136, 1040 Vienna, Austria
  • 2Vienna Center for Quantum Science and Technology, Atominstitut, Vienna University of Technology, Stadionallee 2, 1020 Vienna, Austria

  • *dmitry.krimer@gmail.com

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Vol. 90, Iss. 4 — October 2014

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